As introduced previously, care decisions for PE center two challenges: (i) identifying those at high risk of PE, and (ii) timing delivery after PE onset to balance maternal and fetal health risks. Though our methodological focus is on regularized estimation and model selection, the resulting fitted illness-death models also generate prospective risk predictions to inform these individualized clinical care decisions [1]}. In Web Appendix REF  we present and discuss a set of four such risk profiles for sample patients using a Weibull model with fusion penalty. Specifically, from baseline the model can predict across time how likely an individual is to be in one of four categories: (i) still pregnant without PE, (ii) already delivered without PE, (iii) already delivered with PE, and (iv) still pregnant with PE. Such profiles directly address clinical needs by highlighting individuals' overall risk of developing PE, while also characterizing the timing of PE and delivery through time.
